Description
MIT krb5 1.6 or later allows an authenticated kadmin with permission to add principals to an LDAP Kerberos database to cause a denial of service (NULL pointer dereference) or bypass a DN container check by supplying tagged data that is internal to the database module.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | krb5 | 1.16.1-1 | — |
| Debian 13 | krb5 | 1.16.1-1 | — |
| Debian 12 | krb5 | 1.16.1-1 | — |
| Debian 9 | krb5 | 1.15-1+deb9u3 | DLA-2771-1 |
| Debian 8 | krb5 | 1.12.1+dfsg-19+deb8u5 | DLA-1643-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | krb5 | 1.16-2ubuntu0.1 | — |
| Ubuntu 16.04 LTS | krb5 | 1.13.2+dfsg-5ubuntu2.1 | — |
| Ubuntu 14.04 LTS | krb5 | 1.12+dfsg-2ubuntu5.4 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | krb5 +7 | 1.15.1-34.el7 | RHSA-2018:3071 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | krb5 | 1.15.2-6.6.2 | SUSE-SU-2019:0175-1 |
| SLES 12 SP3 | krb5 | 1.12.5-40.23.2 | SUSE-SU-2018:0846-1 |
| SLES 12 SP2 | krb5 | 1.12.5-40.23.2 | SUSE-SU-2018:0846-1 |
| SLES 11 SP4 | krb5 | 1.6.3-133.49.113.7.1 | SUSE-SU-2018:0859-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | krb5 | 1.12.5-40.23.2 | SUSE-SU-2018:0846-1 |
| SLES for SAP 12 SP2 | krb5 | 1.12.5-40.23.2 | SUSE-SU-2018:0846-1 |
| SLES for SAP 11 SP4 | krb5 | 1.6.3-133.49.113.7.1 | SUSE-SU-2018:0859-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | krb5 | 1.19.2-2.2 | openSUSE-SU-2024:10899-1 |
| openSUSE Leap 15.0 | krb5 +1 | 1.15.2-lp150.5.6.1 | openSUSE-SU-2019:0139-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | libkadm5 +6 | 1.15.1-20.amzn2.0.1 | ALAS2-2018-1129 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | libkadm5 +6 | 1.15.1-34.el7 | ELSA-2018-3071 |
Advisories 10
- RHSA-2018:3071 Red Hat Security Advisory: krb5 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 9, 2026
- DLA-1643-1 krb5 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2771-1 krb5 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2018:0846-1 Security update for krb5 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0175-1 Security update for krb5 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0859-1 Security update for krb5 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10899-1 krb5-1.19.2-2.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:0139-1 Security update for krb5 SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2-2018-1129 Low: krb5 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Dec 19, 2018
- ELSA-2018-3071 Low: krb5 security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 5, 2018
References
- 1042071 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1551083
- https://github.com/krb5/krb5/commit/e1caf6fb74981da62039846931ebdffed71309d1
- RHSA-2018:3071 vendor-advisory
- FEDORA-2018-f97cb1c9b0 vendor-advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891869
- FEDORA-2018-391a1f3e61 vendor-advisory
- [debian-lts-announce] 20190125 [SECURITY] [DLA 1643-1] krb5 security update mailing-list
- RHBA-2019:0327 vendor-advisory
- [debian-lts-announce] 20210930 [SECURITY] [DLA 2771-1] krb5 security update mailing-list